9938198392 has 16 divisors (see below), whose sum is σ = 18889385040. Its totient is φ = 4901029056.

The previous prime is 9938198377. The next prime is 9938198423. The reversal of 9938198392 is 2938918399.

It is a self number, because there is not a number n which added to its sum of digits gives 9938198392.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8508148 + ... + 8509315.

It is an arithmetic number, because the mean of its divisors is an integer number (1180586565).

Almost surely, 2^9938198392 is an apocalyptic number.

It is an amenable number.

9938198392 is a deficient number, since it is larger than the sum of its proper divisors (8951186648).

9938198392 is a wasteful number, since it uses less digits than its factorization.

9938198392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17017542 (or 17017538 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 61.

The square root of 9938198392 is about 99690.5130491362. The cubic root of 9938198392 is about 2149.9872645361.

The spelling of 9938198392 in words is "nine billion, nine hundred thirty-eight million, one hundred ninety-eight thousand, three hundred ninety-two".